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psql: FATAL: role “postgres” does not exist
... which will just use the latest version.
start postgres server manually: pg_ctl -D /usr/local/var/postgres start
To start server at startup
mkdir -p ~/Library/LaunchAgents
ln -sfv /usr/local/opt/postgresql/*.plist ~/Library/LaunchAgents
launchctl load ~/Library/LaunchAgents/homebrew.mxcl.post...
Xml configuration versus Annotation based configuration [closed]
...d they are, but I would argue that leaving the mapping of beans to the database in XML is also good, as the object shouldn't care where its information came from, it should just care what it can do with its information. But if you like JPA (I don't have any expirience with it), by all means, go for...
How to read a line from the console in C?
...r * getline(void) {
char * line = malloc(100), * linep = line;
size_t lenmax = 100, len = lenmax;
int c;
if(line == NULL)
return NULL;
for(;;) {
c = fgetc(stdin);
if(c == EOF)
break;
if(--len == 0) {
len = lenmax;
...
Why does gulp.src not like being passed an array of complete paths to files?
...e globbing doesn't know where the root of the path is (in fact, it guesses based on the first glob). Therefore, each file is rooted in the folder it contains, and the relative path is empty.
However, there is an easy solution. Pass an object with the key base as the second argument to gulp.src, a...
How do you manually execute SQL commands in Ruby On Rails using NuoDB
...nd I'm using to execute custom SQL statements is:
results = ActiveRecord::Base.connection.execute("foo")
with "foo" being the sql statement( i.e. "SELECT * FROM table").
This command will return a set of values as a hash and put them into the results variable.
So on my rails application_control...
C# member variable initialization; best practice?
...r logic. The only difference is that field initializers happen before any "base"/"this" constructor.
The constructor approach can be used with auto-implemented properties (field initializers cannot) - i.e.
[DefaultValue("")]
public string Foo {get;set;}
public Bar() { // ctor
Foo = "";
}
Other...
How to add directory to classpath in an application run profile in IntelliJ IDEA?
... Some documentation on how -Xbootclasspath works: docs.oracle.com/cd/E15289_01/doc.40/e15062/optionx.htm#i1018570
– Lambart
May 6 '15 at 17:37
3
...
What does this symbol mean in JavaScript?
...ncatenation, and subtraction operators; unary sign operators
What does = +_ mean in JavaScript, Single plus operator in javascript
What's the significant use of unary plus and minus operators?
Why is [1,2] + [3,4] = "1,23,4" in JavaScript?
Why does JavaScript handle the plus and minus operators bet...
Find all records which have a count of an association greater than zero
...istinct
As an example
[10] pry(main)> Comment.distinct.pluck :article_id
=> [43, 34, 45, 55, 17, 19, 1, 3, 4, 18, 44, 5, 13, 22, 16, 6, 53]
[11] pry(main)> _.size
=> 17
[12] pry(main)> Article.joins(:comments).size
=> 45
[13] pry(main)> Article.joins(:comments).distinct.size
...
Why can't I use switch statement on a String?
...structions.
Before JDK 7
Prior to JDK 7, enum could approximate a String-based switch. This uses the static valueOf method generated by the compiler on every enum type. For example:
Pill p = Pill.valueOf(str);
switch(p) {
case RED: pop(); break;
case BLUE: push(); break;
}
...